ltconfig

这是一款VC++编写的软件

  if test "$compiler_rtti_exceptions" = "yes"; then
    no_builtin_flag=' -fno-builtin -fno-rtti -fno-exceptions'
  else
    no_builtin_flag=' -fno-builtin'
  fi
  
fi

# Check for any special shared library compilation flags.
if test -n "$special_shlib_compile_flags"; then
  echo "$progname: warning: \`$CC' requires \`$special_shlib_compile_flags' to build shared libraries" 1>&2
  if echo "$old_CC $old_CFLAGS " | egrep -e "[ 	]$special_shlib_compile_flags[ 	]" >/dev/null; then :
  else
    echo "$progname: add \`$special_shlib_compile_flags' to the CC or CFLAGS env variable and reconfigure" 1>&2
    can_build_shared=no
  fi
fi

echo $ac_n "checking if $compiler static flag $link_static_flag works... $ac_c" 1>&6
$rm conftest*
echo 'main(){return(0);}' > conftest.c
save_LDFLAGS="$LDFLAGS"
LDFLAGS="$LDFLAGS $link_static_flag"
echo "$progname:833: checking if $compiler static flag $link_static_flag works" >&5
if { (eval echo $progname:834: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
  echo "$ac_t$link_static_flag" 1>&6
else
  echo "$ac_t"none 1>&6
  link_static_flag=
fi
LDFLAGS="$save_LDFLAGS"
$rm conftest*

if test -z "$LN_S"; then
  # Check to see if we can use ln -s, or we need hard links.
  echo $ac_n "checking whether ln -s works... $ac_c" 1>&6
  $rm conftestdata
  if ln -s X conftestdata 2>/dev/null; then
    $rm conftestdata
    LN_S="ln -s"
  else
    LN_S=ln
  fi
  if test "$LN_S" = "ln -s"; then
    echo "$ac_t"yes 1>&6
  else
    echo "$ac_t"no 1>&6
  fi
fi

# Make sure LD is an absolute path.
if test -z "$LD"; then
  ac_prog=ld
  if test "$with_gcc" = yes; then
    # Check if gcc -print-prog-name=ld gives a path.
    echo $ac_n "checking for ld used by GCC... $ac_c" 1>&6
    echo "$progname:866: checking for ld used by GCC" >&5
    ac_prog=`($CC -print-prog-name=ld) 2>&5`
    case "$ac_prog" in
    # Accept absolute paths.
    /* | [A-Za-z]:/*)
      re_direlt='/[^/][^/]*/\.\./'
      sub_uncdrive='s%^\([A-Za-z]\):/%//\1/%'
      # Canonicalize the path of ld
      while echo $ac_prog | grep "$re_direlt" > /dev/null 2>&1; do
        ac_prog=`echo $ac_prog| sed "s%$re_direlt%/%"`
      done
      case "$host_os" in
      cygwin*)
        # Convert to a UNC path for cygwin
        test -z "$LD" && LD=`echo X$ac_prog | $Xsed -e "$sub_uncdrive"`
	;;
      *)
        test -z "$LD" && LD="$ac_prog"
	;;
      esac
      ;;
    ##
    ## FIXME:  The code fails later on if we try to use an $LD with
    ##         '\\' path separators.
    ##
    [A-Za-z]:[\\]*)
      re_direlt='\\[^\\][^\\]*\\\.\.\(\\\)'
      sub_uncdrive='s%^\([A-Za-z]\):\\%//\1/%'
      sub_uncdir='s%\\%/%g'
      # Canonicalize the path of ld
      while echo $ac_prog | grep "$re_direlt" > /dev/null 2>&1; do
        ac_prog=`echo $ac_prog| sed "s%$re_direlt%\1%"`
      done
      case "$host_os" in
      cygwin*)
        # Convert to a UNC path for cygwin
        test -z "$LD" && LD=`echo X$ac_prog | $Xsed -e "$sub_uncdrive" -e "$sub_uncdir"`
	;;
      *)
        test -z "$LD" && LD="$ac_prog"
	;;
      esac
      ;;
    "")
      # If it fails, then pretend we are not using GCC.
      ac_prog=ld
      ;;
    *)
      # If it is relative, then search for the first ld in PATH.
      with_gnu_ld=unknown
      ;;
    esac
  elif test "$with_gnu_ld" = yes; then
    echo $ac_n "checking for GNU ld... $ac_c" 1>&6
    echo "$progname:920: checking for GNU ld" >&5
  else
    echo $ac_n "checking for non-GNU ld""... $ac_c" 1>&6
    echo "$progname:923: checking for non-GNU ld" >&5
  fi

  if test -z "$LD"; then
    IFS="${IFS= 	}"; ac_save_ifs="$IFS"; IFS="${IFS}:"
    for ac_dir in $PATH; do
      test -z "$ac_dir" && ac_dir=.
      if test -f "$ac_dir/$ac_prog"; then
	LD="$ac_dir/$ac_prog"
	# Check to see if the program is GNU ld.  I'd rather use --version,
	# but apparently some GNU ld's only accept -v.
	# Break only if it was the GNU/non-GNU ld that we prefer.
	if "$LD" -v 2>&1 < /dev/null | egrep '(GNU|with BFD)' > /dev/null; then
	  test "$with_gnu_ld" != no && break
	else
	  test "$with_gnu_ld" != yes && break
	fi
      fi
    done
    IFS="$ac_save_ifs"
  fi

  if test -n "$LD"; then
    echo "$ac_t$LD" 1>&6
  else
    echo "$ac_t"no 1>&6
  fi

  if test -z "$LD"; then
    echo "$progname: error: no acceptable ld found in \$PATH" 1>&2
    exit 1
  fi
fi

# Check to see if it really is or is not GNU ld.
echo $ac_n "checking if the linker ($LD) is GNU ld... $ac_c" 1>&6
# I'd rather use --version here, but apparently some GNU ld's only accept -v.
if $LD -v 2>&1 </dev/null | egrep '(GNU|with BFD)' 1>&5; then
  with_gnu_ld=yes
else
  with_gnu_ld=no
fi
echo "$ac_t$with_gnu_ld" 1>&6

# See if the linker supports building shared libraries.
echo $ac_n "checking whether the linker ($LD) supports shared libraries... $ac_c" 1>&6

allow_undefined_flag=
no_undefined_flag=
archive_cmds=
archive_sym_cmds=
old_archive_from_new_cmds=
export_dynamic_flag_spec=
whole_archive_flag_spec=
hardcode_libdir_flag_spec=
hardcode_libdir_separator=
hardcode_direct=no
hardcode_minus_L=no
hardcode_shlibpath_var=unsupported
runpath_var=

case "$host_os" in
aix3* | aix4*)
  # On AIX, the GNU linker works like the native linker.
  with_gnu_ld=no
  ;;
esac

ld_shlibs=yes
if test "$with_gnu_ld" = yes; then

  # See if GNU ld supports shared libraries.
  case "$host_os" in
  amigaos*)
    archive_cmds='$rm $objdir/a2ixlibrary.data~$echo "#define NAME $libname" > $objdir/a2ixlibrary.data~$echo "#define LIBRARY_ID 1" >> $objdir/a2ixlibrary.data~$echo "#define VERSION $major" >> $objdir/a2ixlibrary.data~$echo "#define REVISION $revision" >> $objdir/a2ixlibrary.data~$AR cru $lib$libobjs~$RANLIB $lib~(cd $objdir && a2ixlibrary -32)'
    hardcode_libdir_flag_spec='-L$libdir'
    hardcode_minus_L=yes
    ;;

  sunos4*)
    archive_cmds='$LD -assert pure-text -Bstatic -o $lib$libobjs$deplibs'
    hardcode_direct=yes
    hardcode_minus_L=yes
    hardcode_shlibpath_var=no
    ;;

  cygwin32* | mingw32*)
    if test "$with_gcc" = yes; then
      # hardcode_libdir_flag_spec is actually meaningless, as there is
      # no search path for DLLs.
      hardcode_libdir_flag_spec='-L$libdir'
      allow_undefined_flag=unsupported
      # Very, very bogus.
      echo '
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#undef WIN32_LEAN_AND_MEAN
#include <stdio.h>

BOOL APIENTRY DllMain (HINSTANCE hInst, DWORD reason, LPVOID reserved);

#include <cygwin/cygwin_dll.h>
DECLARE_CYGWIN_DLL( DllMain );
HINSTANCE __hDllInstance_base;

BOOL APIENTRY
DllMain (HINSTANCE hInst, DWORD reason, LPVOID reserved)
{
  __hDllInstance_base = hInst;
  return TRUE;
}
' > ltdll.c
      archive_cmds='$CC -c '"`pwd`"'/ltdll.c~echo EXPORTS > $lib-def~
      $DLLTOOL --export-all --output-def $lib-def $libobjs ltdll.$objext~
      $CC -Wl,--base-file,$soname-base -Wl,--dll -nostartfiles -Wl,-e,__cygwin_dll_entry@12 $libobjs ltdll.$objext~
      $DLLTOOL --as=$AS --dllname $soname --exclude-symbol=_cygwin_dll_entry@12 --def $lib-def --base-file $soname-base --output-exp $soname-exp~
      $CC -Wl,--base-file,$soname-base $soname-exp -Wl,--dll -nostartfiles -Wl,-e,__cygwin_dll_entry@12 -o $lib $libobjs ltdll.$objext$deplibs~
      $DLLTOOL --as=$AS --dllname $soname --exclude-symbol=_cygwin_dll_entry@12 --def $lib-def --base-file $soname-base --output-exp $soname-exp~
      $CC $soname-exp -Wl,--dll -nostartfiles -Wl,-e,__cygwin_dll_entry@12 -o $lib $libobjs ltdll.$objext$deplibs~
      $rm ltdll.$objext $soname-base $soname-exp'
      archive_sym_cmds='$CC -c '"`pwd`"'/ltdll.c~echo EXPORTS > $lib-def~
      cat "$export_symbols" >> $lib-def~
      $CC -Wl,--base-file,$soname-base -Wl,--dll -nostartfiles -Wl,-e,__cygwin_dll_entry@12 $libobjs ltdll.$objext~
      $DLLTOOL --as=$AS --dllname $soname --exclude-symbol=_cygwin_dll_entry@12 --def $lib-def --base-file $soname-base --output-exp $soname-exp~
      $CC -Wl,--base-file,$soname-base $soname-exp -Wl,--dll -nostartfiles -Wl,-e,__cygwin_dll_entry@12 -o $lib $libobjs ltdll.$objext$deplibs~
      $DLLTOOL --as=$AS --dllname $soname --exclude-symbol=_cygwin_dll_entry@12 --def $lib-def --base-file $soname-base --output-exp $soname-exp~
      $CC $soname-exp -Wl,--dll -nostartfiles -Wl,-e,__cygwin_dll_entry@12 -o $lib $libobjs ltdll.$objext$deplibs~
      $rm ltdll.$objext $soname-base $soname-exp'
      old_archive_from_new_cmds='$DLLTOOL --as=$AS --dllname $soname --def $lib-def --output-lib $objdir/$libname.a~$rm $lib.exp'
   else
      # When not using gcc, we currently assume that we are using
      # Microsoft Visual C++.
      with_gnu_ld=no
      # hardcode_libdir_flag_spec is actually meaningless, as there is
      # no search path for DLLs.
      hardcode_libdir_flag_spec=' '
      allow_undefined_flag=unsupported
      # Tell ltmain to make .lib files, not .a files.
      libext=lib
      # FIXME: Setting linknames here is a bad hack.
      archive_cmds='$CC -o $lib$libobjs`echo "$deplibs" | sed -e '\''s/ -lc$//'\''` -link -dll~linknames='
      # The linker will automatically build a .lib file if we build a DLL.
      old_archive_from_new_cmds='true'
      # FIXME: Should let the user specify the lib program.
      old_archive_cmds='lib /OUT:$oldlib$oldobjs'
      fix_srcfile_path='`cygpath -w $srcfile`'
    fi
    ;;

  *)
    if $LD --help 2>&1 | egrep ': supported targets:.* elf' > /dev/null; then
      archive_cmds='$CC -shared ${wl}-soname $wl$soname -o $lib$libobjs$deplibs'
      archive_sym_cmds='$CC -shared ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib$libobjs$deplibs'
    else
      ld_shlibs=no
    fi
    ;;
  esac

  if test "$ld_shlibs" = yes && test "$with_gnu_ld" = yes; then
    runpath_var=LD_RUN_PATH
    hardcode_libdir_flag_spec='${wl}--rpath ${wl}$libdir'
    export_dynamic_flag_spec='${wl}--export-dynamic'
    whole_archive_flag_spec='${wl}--whole-archive$convenience ${wl}--no-whole-archive'
  fi
else
  # PORTME fill in a description of your system's linker (not GNU ld)
  case "$host_os" in
  aix3*)
    allow_undefined_flag=unsupported
    archive_cmds='$NM$libobjs | $global_symbol_pipe | sed '\''s/.* //'\' | sort | uniq' > $lib.exp~
        $LD -o $objdir/$soname$libobjs$deplibs -bE:$lib.exp -T512 -H512 -bM:SRE~$AR cru $lib $objdir/$soname'
    archive_sym_cmds='$LD -o $objdir/$soname$libobjs$deplibs -bE:$export_symbols -T512 -H512 -bM:SRE~$AR cru $lib $objdir/$soname'
    # Note: this linker hardcodes the directories in LIBPATH if there
    # are no directories specified by -L.
    hardcode_minus_L=yes
    if test "$with_gcc" = yes && test -z "$link_static_flag"; then
      # Neither direct hardcoding nor static linking is supported with a
      # broken collect2.
      hardcode_direct=unsupported
    fi
    ;;

  aix4*)
    allow_undefined_flag=unsupported
    archive_cmds='$NM$libobjs | $global_symbol_pipe | sed '\''s/.* //'\' | sort | uniq' > $lib.exp        else cat $export_symbols > $lib.exp~
    	$CC -o $objdir/$soname$libobjs$deplibs ${wl}-bE:$lib.exp ${wl}-bM:SRE ${wl}-bnoentry~$AR cru $lib $objdir/$soname'
    archive_sym_cmds='$CC -o $objdir/$soname$libobjs$deplibs ${wl}-bE:$export_symbols ${wl}-bM:SRE ${wl}-bnoentry~$AR cru $lib $objdir/$soname'
    hardcode_direct=yes
    hardcode_minus_L=yes
    ;;

  amigaos*)
    archive_cmds='$rm $objdir/a2ixlibrary.data~$echo "#define NAME $libname" > $objdir/a2ixlibrary.data~$echo "#define LIBRARY_ID 1" >> $objdir/a2ixlibrary.data~$echo "#define VERSION $major" >> $objdir/a2ixlibrary.data~$echo "#define REVISION $revision" >> $objdir/a2ixlibrary.data~$AR cru $lib$libobjs~$RANLIB $lib~(cd $objdir && a2ixlibrary -32)'
    hardcode_libdir_flag_spec='-L$libdir'
    hardcode_minus_L=yes
    ;;

  cygwin32* | mingw32*)
    if test "$with_gcc" = yes; then
      # hardcode_libdir_flag_spec is actually meaningless, as there is
      # no search path for DLLs.
      hardcode_libdir_flag_spec='-L$libdir'
      allow_undefined_flag=unsupported
      # Very, very bogus.
      echo '
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#undef WIN32_LEAN_AND_MEAN
#include <stdio.h>

BOOL APIENTRY DllMain (HINSTANCE hInst, DWORD reason, LPVOID reserved);

#include <cygwin/cygwin_dll.h>
DECLARE_CYGWIN_DLL( DllMain );
HINSTANCE __hDllInstance_base;

BOOL APIENTRY
DllMain (HINSTANCE hInst, DWORD reason, LPVOID reserved)
{
  __hDllInstance_base = hInst;
  return TRUE;
}
' > ltdll.c
      archive_cmds='$CC -c '"`pwd`"'/ltdll.c~echo EXPORTS > $lib-def~
      $DLLTOOL --export-all --output-def $lib-def $libobjs ltdll.$objext~
      $CC -Wl,--base-file,$soname-base -Wl,--dll -nostartfiles -Wl,-e,__cygwin_dll_entry@12 $libobjs ltdll.$objext~
      $DLLTOOL --as=$AS --dllname $soname --exclude-symbol=_cygwin_dll_entry@12 --def $lib-def --base-file $soname-base --output-exp $soname-exp~
      $CC -Wl,--base-file,$soname-base $soname-exp -Wl,--dll -nostartfiles -Wl,-e,__cygwin_dll_entry@12 -o $lib $libobjs ltdll.$objext$deplibs~
      $DLLTOOL --as=$AS --dllname $soname --exclude-symbol=_cygwin_dll_entry@12 --def $lib-def --base-file $soname-base --output-exp $soname-exp~
      $CC $soname-exp -Wl,--dll -nostartfiles -Wl,-e,__cygwin_dll_entry@12 -o $lib $libobjs ltdll.$objext$deplibs~
      $rm ltdll.$objext $soname-base $soname-exp'
      archive_sym_cmds='$CC -c '"`pwd`"'/ltdll.c~echo EXPORTS > $lib-def~
      cat "$export_symbols" >> $lib-def~
      $CC -Wl,--base-file,$soname-base -Wl,--dll -nostartfiles -Wl,-e,__cygwin_dll_entry@12 $libobjs ltdll.$objext~
      $DLLTOOL --as=$AS --dllname $soname --exclude-symbol=_cygwin_dll_entry@12 --def $lib-def --base-file $soname-base --output-exp $soname-exp~
      $CC -Wl,--base-file,$soname-base $soname-exp -Wl,--dll -nostartfiles -Wl,-e,__cygwin_dll_entry@12 -o $lib $libobjs ltdll.$objext$deplibs~
      $DLLTOOL --as=$AS --dllname $soname --exclude-symbol=_cygwin_dll_entry@12 --def $lib-def --base-file $soname-base --output-exp $soname-exp~
      $CC $soname-exp -Wl,--dll -nostartfiles -Wl,-e,__cygwin_dll_entry@12 -o $lib $libobjs ltdll.$objext$deplibs~
      $rm ltdll.$objext $soname-base $soname-exp'
      old_archive_from_new_cmds='$DLLTOOL --as=$AS --dllname $soname --def $lib-def --output-lib $objdir/$libname.a~$rm $lib.exp'
    else
      # When not using gcc, we currently assume that we are using
      # Microsoft Visual C++.
      # hardcode_libdir_flag_spec is actually meaningless, as there is
      # no search path for DLLs.
      hardcode_libdir_flag_spec=' '
      allow_undefined_flag=unsupported
      # Tell ltmain to make .lib files, not .a files.
      libext=lib
      # FIXME: Setting linknames here is a bad hack.
      archive_cmds='$CC -o $lib$libobjs`echo "$deplibs" | sed -e '\''s/ -lc$//'\''` -link -dll~linknames='
      # The linker will automatically build a .lib file if we build a DLL.
      old_archive_from_new_cmds='true'
      # FIXME: Should let the user specify the lib program.
      old_archive_cmds='lib /OUT:$oldlib$oldobjs'
      fix_srcfile_path='`cygpath -w $srcfile`'
    fi
    ;;

  # FreeBSD 2.2.[012] allows us to include c++rt0.o to get C++ constructor
  # support.  Future versions do this automatically, but an explicit c++rt0.o
  # does not break anything, and helps significantly (at the cost of a little
  # extra space).
  freebsd2.2*)
    archive_cmds='$LD -Bshareable -o $lib$libobjs$deplibs /usr/lib/c++rt0.o'
    hardcode_libdir_flag_spec='-R$libdir'
    hardcode_direct=yes
    hardcode_minus_L=yes
    hardcode_shlibpath_var=no
    ;;

  # Unfortunately, older versions of FreeBSD 2 do not have this feature.
  freebsd2*)
    archive_cmds='$LD -Bshareable -o $lib$libobjs$deplibs'
    hardcode_direct=yes
    hardcode_minus_L=yes
    hardcode_shlibpath_var=no
    ;;

  # FreeBSD 3, at last, uses gcc -shared to do shared libraries.
  freebsd3*)
    archive_cmds='$CC -shared -o $lib$libobjs$deplibs'
    hardcode_libdir_flag_spec='-R$libdir'
    hardcode_direct=yes
    hardcode_minus_L=no
    hardcode_shlibpath_var=no
    ;;

  hpux9*)